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Commit e4955c99 authored by Li Zefan's avatar Li Zefan Committed by Ingo Molnar
Browse files

blktrace: mark ddir_act[] const 



Impact: cleanup

ddir_act and what2act always stay immutable.

Signed-off-by: default avatarLi Zefan <lizf@cn.fujitsu.com>
Acked-by: default avatarJens Axboe <jens.axboe@oracle.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
LKML-Reference: <49C89415.5080503@cn.fujitsu.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent b125130b

kernel/trace/blktrace.c

+4 −4
Original line number Diff line number Diff line
@@ -147,7 +147,7 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector, 
/*

 * Data direction bit lookup

 */

static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ),

static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ),

				 BLK_TC_ACT(BLK_TC_WRITE) };



/* The ilog2() calls fall out because they're constant */
@@ -1116,10 +1116,10 @@ static void blk_tracer_reset(struct trace_array *tr) 
	blk_tracer_stop(tr);

}



static struct {

static const struct {

	const char *act[2];

	int	   (*print)(struct trace_seq *s, const struct trace_entry *ent);

} what2act[] __read_mostly = {

} what2act[] = {

	[__BLK_TA_QUEUE]	= {{  "Q", "queue" },	   blk_log_generic },

	[__BLK_TA_BACKMERGE]	= {{  "M", "backmerge" },  blk_log_generic },

	[__BLK_TA_FRONTMERGE]	= {{  "F", "frontmerge" }, blk_log_generic },